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Permanence for nonautonomous Lotka-Volterra cooperative systems with delays. (English) Zbl 1186.34119
Summary: We consider a class of nonautonomous two species Lotka-Volterra cooperative population systems with time delays, and establish sufficient conditions which ensure the system to be permanent.

MSC:
 34K60 Qualitative investigation and simulation of models involving functional-differential equations 34K25 Asymptotic theory of functional-differential equations 92D25 Population dynamics (general)
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References:
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